Why did the development of 80 percent efficient furnaces using draft-inducer fans present a problem for venting tables?
A) The fan heated the air too much for standard venting.
B) The use of natural-draft and draft-induced furnaces had little impact on venting tables.
C) The inducer fan cooled the air and a smaller vent was required to prevent condensation.
D) The draft-inducer fans required the use of a larger vent.
C
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A humidifier should cycle with the blower in the heating unit.
Answer the following statement true (T) or false (F)
Cam ground pistons, as they warm up, take on which of these shapes?
A) Tapered B) Oval C) Round D) No change
Which of these tools is needed when diagnosing an electronic throttle system?
A) Pocket code reader B) Vacuum gauge C) Spark tester D) Scan tool
Technician A says that vehicles with independent rear suspensions provide better handling than those with solid rear axles. Technician B says that vehicles with independent rear suspensions generally have less unsprung weight. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician